Fibre container



May 1, 1962 H. M. HILL FIBRE CONTAINER Filed May 20, 1960 FIG j i 7 l l 3 3 INVENTOR 6 2? 30 7 fl W D ATTORNEY United States Patent O 3,032,252 FIBRE CONTAINER Howard M. Hill, Hamilton, Va. Filed May 20, 1960, Ser'. No. 30,646 Claims. (Cl. 229-37) This invention relates to fibre containers for the packaging of liquids such as milk and the like and is directed particularly toward the side-wall and bottom construction.

An object of the instant invention is to increase the speed of manufacture of containers by providing an integral bottom and side-wall construction in which the bottom is formed from a single thickness of fibre.

Another object of this invention is a saving in paper over a container wherein body and bottom are made of separate pieces.

Another object is to provide a bottom seam wherein the strength of the seam and the bottom closure as a whole is greater and more leak-proof than a seam lying in a lateral plane.

Another object is improvement of sealing conditions at certain of the junctures between body and bottom, especially the corners.

Another object is simplification of machinery through elimination of feeding devices for a separate bottom.

Numerous other objects and advantages of the invention may be apparent as it is better understood from the following description which, taken in connection with the accompanying drawing, discloses a preferred embodiment thereof.

Referring to the drawings:

FIGURE 1 is a perspective view of an open-ended container embodying the instant invention.

FIGURE 2 is a plan view of the blank used in making the container shown in FIGURE 1.

FIGURE 3 is a perspective view of the container of the instant invention showing the body side-seam made up and the bottom folded under ready for sealing.

As a preferred embodiment of the instant invention FIGS. 1 to 3 inclusive of the drawings illustrate a container of rectangular cross-section comprising a fibre tubular body 11 closed at its lower end by a flat integral closure member 13 with gluing flaps 20, 21, and 22. The container may be used as an open ended vessel or may be closed at its upper end in any suitable manner.

The container is made from a one piece blank 11 (FIG. 2) which is scored vertically on lines 25, 26, 27, and 28 dividing it into panels 15, 16, 17, 18, and 19 that become the four side-walls of the container when folded at the four scored lines and fastened with a suitable adhesive 14 at side seam 12 (FIGS. 2 and 3). The construction of blank 11 is such that the operation of folding and gluing side seam 12 causes bottom closure member 13 to assume a position as shown in FIG. 3 from which position with further folding, gluing flaps 20, 21, and 22 may be attached to side-wall panels 18, 19, 15, and 16 by adhesive applied to the blank in the flat or at the time of sealing. After gluing, flaps 20, 21, and 22 lie in the same planes as the respective wall panels to which each is glued. For securely sealing the two corners at the juncture of the integral body walls and bottom closure member 13, triangular web areas 23 and 24 (FIG. 2) are coated on both sides with adhesive. Forming and gluing of flaps 20, 21, and 22 is facilitated by score lines 26 and 27 (FIG. 2) and by score lines 31, 33, and 34. Folding of bottom closure member 13 is facilitated by score line 32 coextensive with body blank edge 35 and terminating at edges 36 and 37 of gluing flaps 20 and 22.

It is thought [that the invention and most of its advantages will be understood from the foregoing description and it will be apparent that changes may be made in the construction and arrangement of the parts without departing from the spirit and scope of the invention, the form hereinbefore described being a preferred embodiment thereof.

I claim:

I. A container for liquids comprising a tubular fibre body of rectangular cross section closed at one end by an integral closure member of single thickness said closure member depending from one body panel and parts of two adjacent panels of said rectangular body and folded about a score line at the juncture of said closure member and said tubular body said closure member having depending fiaps on three sides adhesively secured to the exterior surfaces of said body panels and triangular web areas interconnecting certain of said body panels and said closure member depending flaps, adhesively secured under the two flaps adjacent the juncture of said body panels and said bottom closure member.

2. A container as described in claim 1 wherein construction of the blank used is of such form as to induce simultaneous folding of an integral bottom closure member upon formation of a body side seam.

3. A container as described in claim 1 wherein the adhesive used is of a thermoplastic nature.

4. A container as described in claim 1 wherein the adhesive used is of a thermosetting nature.

5. A container as described in claim 1 wherein the adhesive used is of a water miscible nature.

References Cited in the file of this patent UNITED STATES PATENTS 1,723,150 Gannon et al Aug. 6, 1929 2,478,360 Ball Aug. 9, 1949 2,515,327 Bergstein July 18, 1950 FOREIGN PATENTS 428,869 Great Britain May 17, 1935 

